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Note 9 - Stock Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Nonvested Restricted Stock Shares Activity [Table Text Block] |
Total authorized RSUs in Plan approved by shareholders |  |  | 4,850,000 |
Stock issued out of the Plan from vested grants |  |  | (3,265,829 | )
Non-vested grants |  |  | (1,056,937 | )
RSUs available for future issuance |  |  | 527,234 |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
Non-vested grants at December 31, 2020 |  |  | 324,250 |
Granted – weighted average share price on grant date was $2.46 |  |  | 173,000 |
Vested – weighted average share price on vesting date was $2.27 |  |  | (296,250 | )
Forfeited |  |  | (18,000 | )
Non-vested grants at December 31, 2021 |  |  | 183,000 |
Granted – weighted average share price on grant date was $6.74 |  |  | 881,437 |
Vested |  |  | — |
Forfeited |  |  | (7,500 | )
Non-vested grants at December 31, 2022 |  |  | 1,056,937 |
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
Vesting Year |  | RSUs Vesting |
2023 |  |  | 457,721 |
2024 |  |  | 299,608 |
2025 |  |  | 299,608 |

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